Attachment for graders.



No. 897,955. PATENTED SEPT. 8, 1908.

H. N. BARRETT & E. D. WALLACE. ATTACHMENT FOR GRADERS.

APPLICATION FILED DEG. 1, 1905.

N/WIJJEJ UNITED STATES PATENT OFFICE.

HENRY N. BARRETT, OF HOPE, NORTH DAKOTA, AND ELMER D. WALLACE, OFMINNEAPOLIS, MINNESOTA.

ATTACHMENT FOR GRADERS.

Specification of Letters Patent.

Patented Sept. 8, 1908.

To all whom it may concern:

Be it known that we, HENRY N. BARRETT, residing at Hope, Steele county,North Dakota, and ELMER D. -WALLACE, of Minneapolis, Hennepin county,.Minnesota, have invented certain new and useful Improvements inAttachments for Graders, of which the following is a specification.

The object of our invention is to provide means in connection with thescraper device 'of a grader conveyer belt to receivethe dirt dislodgedfrom the belt by said scra er and discharge it in front or in the rearof t e belt.

The invention consists generally in a conveyer device located betweenthe upper and lower section of the grader belt and whereto the dirtdislodged from the belt by. the

plow having a beam. 3, and 4 a carrier belt operating over roller 5 andwhereto the dirt is directed by the mold board of the plow.

6 represents a frame on each side of the carrier belt, and 7 a cross barwhereon a flexible scraper device 8 is mounted. This scraper device maybe made of any suitable material, preferably heavy rubber belting, andits upper edge is adapted to bear with a yielding pressure on the innersurface of the belt and scrape off any accumulation of dirt thereonwhich if allowed to remain would pass between the roller and the beltand interfere seriously with the successful operation of the machine.Scraper devices of this kind are generally used on grading machines, andwe make no claim to the scra er in this case.

' henever the scraper has been used it has been necessary to reach inbetween the upper and lower section of the belt with a rake or othertool and drag or push out the accumulation of dirt to prevent it frombeing carried between tho lower roller and the belt and interfering withthe successful operation of the machine. The removal of this dirt hasalways required the expenditure of considerable time and labor. To avoidthis removal of the dirt by hand from between the upper and lowersections of the belt, we prefer to provide a carrying device operatingtransversely with respect to the movement of the grader belt, andcomprising preferably a trough semicircular in cross section, supportedbetween the cross bar 7 and the lower roller in position to receive thedirt dislodged by the flexible scraper. In this trough we arran e ascrew conve er 10 operated by any suitable means as a be t 11 connectedwith some operating part of the machine. A lip 12 may be provided on oneend of the trough extending beyond the edge of the belt for the purposeof directing the dirt collected by the conveyor to a point where it willdrop upon the ground out of the path of the belt. The edge of thetrough, as shown u on the drawing, is close to the roller 5 for thepurpose of keeping the surface of theroller clean and preventing the.dirt accumulating thereon from enterin between the belt and the roller.The dirt col ected by this trough edge will drop down into the troughand be collected by the conveyer.

We claim as our invention: 1. In a grading machine, the combinatio witha carrier belt and a scraper arranged between the upper and lowersections of the belt and engaging the surface of the same to remove theaccumulated dirt, of frame members on each side of said carrier belt, atrough near "said scraper, said frame members forming ends to thetrough, and a carrier operating transversely to the direction ofmovement of said belt and whereto the dirt is delivered by said scraper,substantially as described.

2. In a grading machine, the combination with a carrier belt and a scraer device arranged between the upper and ower sections thereof, of atrough provided near said scraper, and a transversely o crating conveyerrovidedinsaidtrough,su stantially as descri ed.

3. In av grading machine, the combination with a carrier belt and aflexible scraper arran ed between the u per and lower sections of t ebelt, of a troug semi-circular in cross section provided near saidscraper and adapted to receive the dirt therefrom, said trough beingarranged transversely with respect todislodged from said belt beyond theedge of the same, and means acting upon the inner surface of the carrierbelt ad acent to said delivering means to detach dirt from the belt anddirect it onto saiddelivering means, said delivering means "beingentirely Within the carrier belt, substantially as described.

5. In a gradin machine, the combination with a carrier bit and a rollerand a scraper arranged between the'upper and lower sections of the beltand engagmg the surface of the same to remove the accumulation of dirt,of a trou h arranged transversely nearsaid scraper 20 and aving an edgeadapted to engage the surface of said roller, for the purpose specified.

In witness whereof, we have hereunto set our hands HENRY N. BARRETT, atHo e, Steele county, North Dakota, this 15th ay 25 of November 1905, andELMER D. WALLAoE, at Minnea olis, Hennepin county, Minnesota, this 22d 0November, 1905.

HENRY N. BARRETT. ELMER D. WALLACE.

Witnesses as to the signature of Henry N. Barrett:

S. J. DANSKIN, ARTHUR G. NELSON.

Witnesses as to the signature of Elmer D.

Wallace:

RICHARD PAUL, O. MAGNAMARA.

